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Old 06-12-2013, 12:47 AM
ard ard is offline
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Quote:
Originally Posted by ard View Post
How did you diagnose the fuse bad? Did you measure the voltages at the connection to the O2 sensors and find no voltage?

This error is most common when an O2 is unplugged or a wire ripped.... on the E39 the fuse is under the ebox/air filter and is NOT well marked/documented.

Again, measure voltages at the O2 connection first, THEN look for fuses.
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